Trinuclear and Mononuclear Lanthanoid Complexes Containing 2-Methyl-8-quinolinolate: Synthesis, Structures, and Magnetic Properties

Nurul F. Ghazali, Wasinee Phonsri, Keith S. Murray, Peter C. Junk, Glen B. Deacon, David R. Turner

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Two series of new lanthanoid complexes containing 2-methyl-8-quinolinolate (MQ) have been prepared at elevated temperatures. Lighter elements yield trinuclear complexes [Ln3(MQ)9(HMQ)]·5H2O·3MeOH (1Ln, where Ln = Pr, Eu, Gd, Tb, Dy and Ho) by solvothermal reactions, and heavier lanthanoids yield the mononuclear complexes [Ln(MQ)3(HMQ)]·HMQ·MeOH (2Ln, where Ln = Dy, Ho, Er and Yb), with overlap between the two series found in the cases of Dy and Ho. Magnetic studies reveal that 1Tb, 1Dy, and 2Er show distinct slow magnetic relaxation under external DC fields. The magnetic data for 1Gd yielded the J value for weak antiferromagnetic coupling and the magnetocaloric –ΔSm value of 20 J kg–1 K–1 at 2 K and ΔH = 5 T.

Original languageEnglish
Pages (from-to)2549-2557
Number of pages9
JournalEuropean Journal of Inorganic Chemistry
Volume2019
Issue number20
DOIs
Publication statusPublished - 2 Jun 2019

Keywords

  • Lanthanide contraction
  • Lanthanides
  • Magnetic properties
  • Quinaldinolate
  • Structure elucidation

Cite this

@article{1be0aa547a2a4e438e4f0f01af3e9f2d,
title = "Trinuclear and Mononuclear Lanthanoid Complexes Containing 2-Methyl-8-quinolinolate: Synthesis, Structures, and Magnetic Properties",
abstract = "Two series of new lanthanoid complexes containing 2-methyl-8-quinolinolate (MQ–) have been prepared at elevated temperatures. Lighter elements yield trinuclear complexes [Ln3(MQ)9(HMQ)]·5H2O·3MeOH (1Ln, where Ln = Pr, Eu, Gd, Tb, Dy and Ho) by solvothermal reactions, and heavier lanthanoids yield the mononuclear complexes [Ln(MQ)3(HMQ)]·HMQ·MeOH (2Ln, where Ln = Dy, Ho, Er and Yb), with overlap between the two series found in the cases of Dy and Ho. Magnetic studies reveal that 1Tb, 1Dy, and 2Er show distinct slow magnetic relaxation under external DC fields. The magnetic data for 1Gd yielded the J value for weak antiferromagnetic coupling and the magnetocaloric –ΔSm value of 20 J kg–1 K–1 at 2 K and ΔH = 5 T.",
keywords = "Lanthanide contraction, Lanthanides, Magnetic properties, Quinaldinolate, Structure elucidation",
author = "Ghazali, {Nurul F.} and Wasinee Phonsri and Murray, {Keith S.} and Junk, {Peter C.} and Deacon, {Glen B.} and Turner, {David R.}",
year = "2019",
month = "6",
day = "2",
doi = "10.1002/ejic.201900293",
language = "English",
volume = "2019",
pages = "2549--2557",
journal = "European Journal of Inorganic Chemistry",
issn = "1434-1948",
publisher = "Wiley-VCH Verlag GmbH & Co. KGaA",
number = "20",

}

Trinuclear and Mononuclear Lanthanoid Complexes Containing 2-Methyl-8-quinolinolate : Synthesis, Structures, and Magnetic Properties. / Ghazali, Nurul F.; Phonsri, Wasinee; Murray, Keith S.; Junk, Peter C.; Deacon, Glen B.; Turner, David R.

In: European Journal of Inorganic Chemistry, Vol. 2019, No. 20, 02.06.2019, p. 2549-2557.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Trinuclear and Mononuclear Lanthanoid Complexes Containing 2-Methyl-8-quinolinolate

T2 - Synthesis, Structures, and Magnetic Properties

AU - Ghazali, Nurul F.

AU - Phonsri, Wasinee

AU - Murray, Keith S.

AU - Junk, Peter C.

AU - Deacon, Glen B.

AU - Turner, David R.

PY - 2019/6/2

Y1 - 2019/6/2

N2 - Two series of new lanthanoid complexes containing 2-methyl-8-quinolinolate (MQ–) have been prepared at elevated temperatures. Lighter elements yield trinuclear complexes [Ln3(MQ)9(HMQ)]·5H2O·3MeOH (1Ln, where Ln = Pr, Eu, Gd, Tb, Dy and Ho) by solvothermal reactions, and heavier lanthanoids yield the mononuclear complexes [Ln(MQ)3(HMQ)]·HMQ·MeOH (2Ln, where Ln = Dy, Ho, Er and Yb), with overlap between the two series found in the cases of Dy and Ho. Magnetic studies reveal that 1Tb, 1Dy, and 2Er show distinct slow magnetic relaxation under external DC fields. The magnetic data for 1Gd yielded the J value for weak antiferromagnetic coupling and the magnetocaloric –ΔSm value of 20 J kg–1 K–1 at 2 K and ΔH = 5 T.

AB - Two series of new lanthanoid complexes containing 2-methyl-8-quinolinolate (MQ–) have been prepared at elevated temperatures. Lighter elements yield trinuclear complexes [Ln3(MQ)9(HMQ)]·5H2O·3MeOH (1Ln, where Ln = Pr, Eu, Gd, Tb, Dy and Ho) by solvothermal reactions, and heavier lanthanoids yield the mononuclear complexes [Ln(MQ)3(HMQ)]·HMQ·MeOH (2Ln, where Ln = Dy, Ho, Er and Yb), with overlap between the two series found in the cases of Dy and Ho. Magnetic studies reveal that 1Tb, 1Dy, and 2Er show distinct slow magnetic relaxation under external DC fields. The magnetic data for 1Gd yielded the J value for weak antiferromagnetic coupling and the magnetocaloric –ΔSm value of 20 J kg–1 K–1 at 2 K and ΔH = 5 T.

KW - Lanthanide contraction

KW - Lanthanides

KW - Magnetic properties

KW - Quinaldinolate

KW - Structure elucidation

UR - http://www.scopus.com/inward/record.url?scp=85066500946&partnerID=8YFLogxK

U2 - 10.1002/ejic.201900293

DO - 10.1002/ejic.201900293

M3 - Article

VL - 2019

SP - 2549

EP - 2557

JO - European Journal of Inorganic Chemistry

JF - European Journal of Inorganic Chemistry

SN - 1434-1948

IS - 20

ER -